Section 1: Introduction

Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual

May 2012

3-9000-771 Rev A

 

 

Table 1-2 Meter specifications

Digital, analog, and frequency outputs

Frequency/Digital

The meter has user-configurable selections for either a Frequency Output or Digital status

Output(s)

(FODO) (Also see Section 3.6.1)

 

(3) Frequency/Digital Outputs

 

FODO1 (four possible output configurations)

 

FODO2(eight possible output configurations)

 

FODO3(eight possible output configurations)

 

Frequency or Digital Output parameter pairs (see Section 3.6.1)

 

Frequency or Digital Outputs (FODO 1) source selections:

 

(FO1A, DO1A, FO1B, DO1B)

 

Frequency or Digital Outputs (FODO 2) source selections

 

(FO1A, DO1A, FO1B, DO1B, FO2A, DO2A, FO2B, DO2B)

 

Frequency or Digital Outputs (FODO 3) source selections

 

(FO1A, DO1A, FO1B, DO1B, FO2A, DO2A, FO2B, DO2B)

 

Mode options:

 

Open Collector (requires external excitation supply voltage and pull-up resistor)

 

TTL (internally powered by the meter 0-5 VDC signal)

 

Channel B Phase options:

 

Lag forward, Lead reverse (Phase B lags Phase A while reporting forward flow, leads Phase A

 

 

while reporting reverse flow)

 

Lead forward, Lag reverse (Phase B leads Phase A while reporting forward flow, lags Phase A

 

 

while reporting reverse flow)

 

Phase A and Phase B output (based on flow direction)

 

Reverse flow - output only reports flow in the reverse direction. For frequency outputs,

 

 

Phase B of the output is 90 degrees out of phase with Phase A.

 

Forward flow - output only reports flow in the forward direction. For frequency outputs,

 

 

Phase B of the output is 90 degrees out of phase with Phase A.

 

Absolute - output reports flow in both directions. For frequency outputs, Phase B of the

 

 

output is 90 degrees out of phase with Phase A.

 

Bidirectional - output reports flow on Phase A only in the forward direction and on Phase B

 

 

only in the reverse direction.

 

Maximum frequency for the frequency outputs

 

1000Hz

 

5000Hz

 

 

 

Analog Output(s)

(2) 4-20 mA independently configurable analog outputs

 

 

The analog output zero scale offset error is within ±0.1% of full scale and gain error is within

 

 

±0.2% of full scale. The total output drift is within ±50 ppm of full scale per °C.

 

 

 

10

Meter specifications